Volvo All Engines (2013 Emissions) Fault Code: P047F00 PID: EMS Exhaust Pressure Control Valve “A” Stuck Open

Volvo All Engines (2013 Emissions) Fault Code: P047F00 PID: EMS Exhaust Pressure Control Valve “A” Stuck Open

Conditions for diagnostic trouble code (DTC):
1) Sensor value does not change with changing conditions

Observable symptoms
1) Engine brake, poor brake performance/Brake performance too high

Probable cause
1) Exhaust back pressure sensor
2) Leakage from hoses or connections
3) Clogged or blocked air system